Vladimir t



V. T. DIMITROFF.

DENTAL INSTRUMENT. APPLICATION FILEDIDEC14. 1914.

1 ,306,998 Patented June 12, 1919.

WITNESSES. 1 S lNI ENTO VLADIMIR T. DIMITROFF, OF NORTH SCITUATE, RHODEISLAIN'D.

DENTAL INSTRUMENT.

Specification of Letters Patent.

Patented June 17, 1919.

Application filed December 4, 1914. Serial N 0. 875,512.

To all "(P/2011b it may concern Be it known that I, VLADIMIR T. DIM!-rnorr, a citizen of the United States, residing at North Scituate, inthe county .of Providence and State of Rhode Island, have invented newand useful Improvements in DentalInstruments, of which the following isa specification.

My invention relates particularly to the class of dental instrun'ientsand has special reference to devices for holding what is termed dentalfloss.

' An object of my invention is to provide an instrument of the foregoingtype Which will facilitate the cleaning of the teeth with the floss or00rd by the arrangements hereinafter set forth.

Another object of my invention is to provide a dental cord holder. Thebody portion thereof receives a'spool carrying the cord, said cord beingfed between the ends of a substantially U-shaped member, consequentlyfacilitating the cleaning of the teeth therewith.

A further object of my invention is to provide an instrument of theabove nature wherein the U-shapcd member may be adjusted to differentangles according to the desire of the operator thus allowing the same tobe adjusted when cleaning different teeth.

A further object of my invention is to provide a dental cleaninginstrument which consists of but a few simple parts whereby it may bemanufactured and placed upon the market at a minimum cost.

With the above and other objects in view, my invention relates to suchdetails of construction and in the arrangement and combination of partsas will be hereinafter fully described and specifically pointed out inthe appended claim.

In describing my invention in detail, reference will be had to theaccompanying! drawing wherein like characters denote h s orcorrrspomliug parts throughout the SCA- cral views and in which:

Figure 1, is a side elevation of my invention.

Fig. 2, is a a. similar View showing the parts in section.

Fig. 3, is a plan view of the device showing the U-shaped member inadjusted posi tion in dotted lines.

Fig. 4, is a bottom View.

In the accompanying drawings wherein is illustrated the preferred formof my invention, the numeral 10 designates the body or handle portionwhich is preferably constructed of wood or the like material but it isto be appreciated that I do not limit myself to any specific form.

A centrally located hollow portion or cavity 11 is provided Within thehandle and communicates with the bearing or socket 11, and connects atits rear extremity with an opening or bearing 12, the latter extendingto the rear of the handle. The hollow portion further connects with aslot 13, the latter serving the purpose that will be hereinafter setforth.

I have provided, for reception in the hollow portion 11, a spool orbobbin upon which. the cord 15 is wound, this spool compris ing ahemispherical element 16, a pivot element 16, a cylindrical shank l7,and a head 18 which its snugly against an extension 19 on the handle.

From theeforegoing description it will be readily appreciated that thespool may be removed from the hollow portion when it is desired so thata new quantity of cord maybe disposed thereon or the same repaired inany manner. An extension 20 is formed upon the forward end of the handle10, this extension pivot-ally supporting through the medium of a pin 21a circular disk 2'2. This disk has formed about the periphery thereof aplurality of spaced apart recesses 23, these recesses being engaged bycertain mechanisin whereby the disk may be held at different positionsin relation to the handle.

A substantially U-shaped member, such as is shown at 2st is provided,one end thereof being fast upon the disk 22 whereby when the disk isadjusted to dilferent positions the U-shaped member will also headjliisted rela tive to the handle. 1

The cord held upon the spool 14-, is fed outward through a passage 25 inthe handle and along a longitudinally extending recess or groove 26within the same and brought into engagement with a recess 27 in one endof the U-shapcd member, where it there will be made fast in any desiredmanner. However in the drawing I have shown a pin 28 for this purpose.It will now be recognized that the cord spans the U-shapcd member thusproviding a suitable way :50; facilitating the cleaning of the teeth.

lhe disk 22 may be held in rigid relation with the handle by means of asubstantially T-shaped member or bolt 29 Whichis seated Within therecess or cavity 31 and a slot 30 in the handle. One end of the'bolt 29engages with any selected one of the recesses in the disk, anotherportion extending up- Ward and forming a handle whereby the bolt may bemanipulated, and the other slidable in the cavity 31. The cavity 31 hasa coil spring 32 disposed therein which tends to normally hold theT-shaped member or bolt 29 in engagement with the disk 22, as isobvious. i

. By the provision of the slot 13, the shank -12 isfrictionally engagedby the handle ele ments on opposite sides of the slot, said handleelements exerting a suflicient pres- '-'sure 01' tension on the shank toprevent accidental rotation of the latter, thereby maintaining thetension of the span of thread across the U-shaped member.

' From the foregoing it is thought that the operation of my inventionWill be readily recognized and that a further detail description thereofwould be superfluous.

Such changes as are permissible by the sub-joined claim may be recitedWithout departing from the spirit and scope of my invention.

Having thus fully described my invention member being provided withmeans for attaching a portion of the thread, and means for allowing saidU-shaped member to be moved into difierent positions with relation tosaid body and for holding said U-shaped memberin its differentpositions.

VLADIMIR T. DIMITROFF.

Witnesses:

STEPHEN S. WHITE, J r., WILLIAM A. Mnmn'r'r.

